Results 181 to 190 of about 14,811 (225)

Aflatoxin production by entomopathogenic isolates of Aspergillus parasiticus and Aspergillus flavus

Journal of Invertebrate Pathology, 1990
Fourteen isolates of Aspergillus parasiticus and 2 isolates of Aspergillus flavus isolated from the mealybug Saccharicoccus sacchari were analyzed for production of aflatoxins B1, B2, G1, and G2 in liquid culture over a 20-day period. Twelve Aspergillus isolates including 11 A. parasiticus and 1 A.
J, Drummond, D E, Pinnock
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The Parasexual Cycle inAspergillus Parasiticus

Mycologia, 1978
SUMMARYSix diploids of Aspergillus parasiticus involving 12 genetic markers were analyzed by means of the parasexual cycle.
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Aspects of parasexual analysis in Aspergillus parasiticus

Canadian Journal of Microbiology, 1980
A scanning electron microscopic examination of the surface ornamentation of haploid, heterokaryotic, and diploid conidiospores of Aspergillus parasiticus is presented. Previous studies on the parasexual cycle in this aflatoxin-producing species have shown that heterozygous diploids may be isolated with ease.
J W, Bennett, C H, Vinnett, W R, Goynes
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Generation of aflR disruption mutants of Aspergillus parasiticus

Applied Microbiology and Biotechnology, 2000
The aflR gene of Aspergillus parasiticus and A. flavus encodes a binuclear zinc-finger, DNA-binding protein, AflR, responsible for activating the transcription of all known aflatoxin biosynthetic genes including itself. Studies to determine how environmental and nutritional factors affect aflR expression and hence aflatoxin production in A. parasiticus
J W, Cary, K C, Ehrlich, M, Wright, P K, Chang, D, Bhatnagar   +4 more
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BIOENERGETICS OF AFLATOXIN BIOSYNTHESIS IN Aspergillus parasiticus

Journal of Food Science, 1980
ABSTRACT Variations in levels of adenine nucleotides during growth of A. parusiticus were studied under asparagine and zinc deficiency and correlated with aflatoxin biosynthesis. ATP levels decreased gradually from exponential to stationary phase but the reverse was true for
VIDYA M. RAO, S. SARASWATHY, K. K. MAGGON, T. A. VENKITASUBRAMANIAN   +3 more
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Aspersitin-a new metabolite of aspergillus parasiticus

Tetrahedron Letters, 1983
Abstract The structure of aspersitin, a new metabolite of Aspergillus parasiticus was determined by X-ray analysis, and by spectroscopic measurements.
George Büchi, Manuel A. Francisco, William V. Murray, Traudel Kachholz, Arnold L. Demain, John F. Blount   +5 more
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Oxidases in Aspergillus parasiticus in relation to aflatoxin biosynthesis

Toxicon, 1980
Abstract The effects of asparagine and zinc were studied on the nucleotide oxidases and lipid peroxidase during secondary biosynthesis in A. parasiticus . The activity of NADPH and NADH oxidases was higher in zinc deficient cultures as compared to those in sucrose-low salt cultures and under asparagine deficiency, thereby lowering the NADPH/NADP and
V M, Rao, K K, Maggon, T A, Venkitasubramanian   +2 more
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Anti-aspergillus Properties of Phytochemicals Against Aflatoxin Producing Aspergillus flavus and Aspergillus parasiticus

National Academy Science Letters, 2017
Aspergillus flavus and Aspergillus parasiticus are the major contaminants known to produce aflatoxins in food crops (maize, cotton, corn, peanuts and oil-seed). Nowadays various modified cultural practices are being utilized and explored to overcome food contamination problem.
Shraddha Tiwari, Nupur Gupta, Udayabanu Malairaman, Jata Shankar   +3 more
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Ultrastructural studies of induced morphogenesis byAspergillus parasiticus

Medical Mycology, 1974
Vegetative development of Aspergillus parasiticus may follow two patterns of morphogenesis depending upon the presence or absence of manganese ions in the medium. This alteration of morphology is suggestive of a hyphal-yeastlike dimorphism. Aspects of this morphogenesis of A. parasiticus are illustrated and described.
R G, Garrison, K S, Boyd
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Trametes versicolor inhibits aflatoxin production by Aspergillus parasiticus

2003
The ability of lyophilised culture filtrates (LF) and mycelia extracts (ME) of 6 different isolates of Trametes versicolor grown in submerged cultures on 2 media, potato dextrose broth (PDB) and defined mineral media, to control aflatoxins biosynthesis by Aspergillus parasiticus was assayed.
ZJALIC, Slaven, FABBRI, Anna Adele, REVERBERI, Massimo, A. RICELLI, A. L'AURORA, FANELLI, Corrado   +5 more
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